In the end, I have not brewed this yet. I tried to source the Carastan locally in the specific SRM quoted in the magazine, but could not find it. The shop employees told me they did not think Carastan was even still in production. Their thought was to use either crystal 10 or 20 for the Carastan 14 and either crystal 30 or 40 for the Carastan 34. I was not happy with either of those choices, due mainly to my newbie status I did not want to just play around with the numbers and guess, so I brewed something else. I may look into this again in the future when I am more familiar with grain substitutions, just not ready to make that leap yet. Good luck with it and let me know what you find and source, as well as how it comes out. I have not had the original, just thought the recipe and idea behind it sounded great for my not so hop-happy friends.